Automobile brake guide pin mounting and positioning structure

Abstract

The utility model relates to an automobile brake guide pin installing and positioning structure which comprises a caliper body, a support, a guide pin, a fastening sleeve and a dustproof sleeve, a pin hole is formed in the support, a circle of step is arranged on the support, and a protruding ring is arranged on the step. A clamping block is arranged on the inner wall of the dustproof sleeve, one end of the dustproof sleeve is embedded into the clamping groove through the clamping block to be positioned, the other end of the dustproof sleeve is arranged on the protruding ring in a sleeved mode, the other end of the dustproof sleeve protrudes outwards to be provided with a protruding edge, the step is connected with a fastening sleeve in a threaded mode, and the end of the fastening sleeve abuts against the protruding edge of the dustproof sleeve to be positioned. A screw hole is formed in the caliper body, a positioning ring is arranged on one side of the caliper body, a bolt is embedded in the screw hole, the bolt is in threaded connection with the rear end of the guide pin, the rear end of the guide pin is embedded into the positioning ring, the inner wall of the positioning ring is attached to the outer wall of the dustproof sleeve and limits the clamping block, and one end of the dustproof sleeve abuts against and limits the clamping block through a fastening sleeve in threaded connection. And the other end of the guide pin is limited through the positioning ring, so that the dustproof sleeve is effectively prevented from loosening and falling off, and the service life of the guide pin is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to brake guide pin technical field, especially in a kind of automobile brake guide pin installation positioning structure. BACKGROUND

[0002] The existing automobile brake caliper guide pin mechanism adopts the structural form of bracket machine guide pin hole, as shown in Fig. Figure 1 The bracket is provided with guide pin hole, the guide pin hole is injected with lubricating grease, the caliper shell is inserted into the pin hole by guide pin and sealed by dust cover, and the dust cover sealing is mainly used to prevent dust, sand, brake pad debris and other pollutants from entering the guide pin sliding channel, to avoid guide pin and bushing wear and tear and other problems, ensure the normal sliding function of brake caliper. When fixing, the both ends of dust cover are clamped and fixed with guide pin and caliper shell through convex ring, and the dust cover of rubber material will appear aging after long-term use, the end of dust cover is prone to relaxation phenomenon, finally leading to external moisture contacting guide pin, causing guide pin rust problem.

[0003] Chinese patent document: CN201920591400.2 discloses a dustproof guide pin, and the both ends of dust cover in the application are sealed by pressing through fastening ring cooperation pin, the installation positioning mode of this kind although guarantees sealing property, but relatively difficult when installing and dismounting, needs to remove multiple pins in turn, affects maintenance efficiency. UTILITY MODEL CONTENT

[0004] The utility model discloses a kind of automobile brake guide pin installation positioning structure for the above problems, solve the guide pin dust cover in prior art easy to loosen, leading to guide pin damp rust and thus cause jamming and other problems.

[0005] Specific technical solutions are as follows:

[0006] An automobile brake guide pin mounting and positioning structure, comprising a caliper body, a bracket, a guide pin, a fastening sleeve and a dust cover, a pin hole for embedding the front end of the guide pin is arranged on the bracket, a step is arranged on the outer side of the pin hole of the bracket, a convex ring is arranged on the step, and an external thread is arranged on the outer wall of the step; a clamping groove is arranged on the rear end of the guide pin, and the dust cover is sleeved on the guide pin, a clamping block matched with the clamping groove is arranged on the inner wall of one end of the dust cover, so that one end of the dust cover is positioned by being embedded into the clamping groove of the guide pin, the other end of the dust cover is sleeved on the convex ring, and an outer edge of the other end of the dust cover is outwardly protruded and arranged as a convex edge, the convex edge is attached to the upper step, the fastening sleeve is threadedly connected to the step, and the end of the fastening sleeve is positioned by being pressed against the convex edge of the dust cover; a screw hole is arranged on the caliper body at a position corresponding to the pin hole, a positioning ring concentric with the screw hole is arranged on the side of the caliper body close to the bracket, a bolt is embedded in the screw hole, the bolt is threadedly connected to the rear end of the guide pin and fixed, and the rear end of the guide pin is embedded into the positioning ring, and the inner wall of the positioning ring is attached to the outer wall of the dust cover and limits the clamping block.

[0007] Further, the top surface of the convex edge is arranged as a conical surface, and the top end inner wall of the fastening sleeve is also arranged as a conical surface and matched with the top of the convex edge.

[0008] Further, the inner wall of one end of the dust cover is attached to the outer wall of the convex ring under the pressing of the fastening sleeve.

[0009] Further, the outer edge of the convex edge is flush with the outer wall of the step.

[0010] Further, the lower end of the positioning ring is flush with the lower end of the clamping groove.

[0011] Further, an anti-skid pattern is arranged on the outer wall of the positioning ring, or the outer wall of the positioning ring is in a polygonal structure.

[0012] The beneficial effects of the utility model are embodied in that:

[0013] Compared with the traditional fixing mode of the dust cover by the cooperation of the pin and the fastening ring, one end of the dust cover is positioned by being pressed against the fastening sleeve connected through the thread, and the other end is positioned by being resisted by the positioning ring, so that the loosening and falling off of the dust cover at both ends is effectively avoided, and the service life of the guide pin is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the prior art.

[0015] Figure 2 It is a structural schematic diagram of the utility model.

[0016] Figure 3 It is a sectional view of the utility model.

[0017] Explanation of reference signs: clamp body 1, positioning ring 11, screw hole 12, support 2, step 21, convex ring 22, pin hole 23, guide pin 3, fastening sleeve 4, clamping groove 41, dust cover 5, clamping block 51, convex edge 52, bolt 6. DETAILED DESCRIPTION

[0018] In order to make the technical scheme of the utility model more clear and explicit, the utility model will be further described below in combination with the drawings, and any scheme derived by equivalent replacement and conventional reasoning of the technical features of the technical scheme of the utility model falls within the protection scope of the utility model. The fixed connection and fixed setting mentioned in the utility model are general connection modes in the mechanical field, and welding, bolt and nut connection and screw connection are all available.

[0019] In the description of the utility model creation, it is understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model creation and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0020] Please refer to the accompanying Figures 2-3The embodiment provides a kind of automobile brake guide pin installation positioning structure, including caliper body 1, support 2, guide pin 3, fastening sleeve 4 and dust cover 5, support 2 is provided for the front end of guide pin 3 embedding pin hole 23, support 2 is located on the outside of pin hole 23 and is equipped with a circle of steps 21, is equipped with a circle of convex ring 22 on step 21, and outer thread is set on the outer wall of step 21.Guide pin 3 rear end is equipped with a circle of clamping groove 41, and the dust cover 5 is set on guide pin 3, and one end inner wall of dust cover 5 is equipped with a circle of clamping block 51 with the clamping groove 41 is adapted, so that one end of dust cover 5 is embedded into the clamping groove 41 of guide pin 3 by clamping block 51 and is positioned, dust cover 5 other end is set on convex ring 22, and the outer wall of dust cover 5 other end is outwardly convex and is equipped with a circle of convex edge 52, convex edge 52 is attached to upper step 21, step 21 is connected with fastening sleeve 4 by screw thread, the hole for containing dust cover 5 is set in the center of fastening sleeve 4, and the end of fastening sleeve 4 is L-shaped and is bent, so that the end of fastening sleeve 4 is positioned by pressing dust cover 5 convex edge 52.The screw hole 12 is set in the position corresponding to pin hole 23 on caliper body 1, and the side of caliper body 1 close to support 2 is equipped with a circle of positioning ring 11 concentric with screw hole 12, the bolt 6 is embedded in screw hole 12, the rear end of guide pin 3 is fixed by screwing the bolt 6 and makes the rear end of guide pin 3 embedded into positioning ring 11, the inner wall of positioning ring 11 is attached to the outer wall of dust cover 5 and realizes the limitation of clamping block 51, and the lower end of positioning ring 11 is flush with the lower end of clamping groove 41, so that the clamping block 51 is effectively prevented from coming out of clamping groove 41, to effectively position dust cover 5.

[0021] In the embodiment, the top surface of convex edge 52 is set to be tapered, and the inner wall of the end of fastening sleeve 4 is also set to be tapered and is adapted to the top of convex edge 52, so that the end of fastening sleeve 4 can be positioned in the radial direction by pressing downward, to avoid the separation of convex edge 52 from the end of fastening sleeve 4, and the inner wall of one end of dust cover 5 is set to be attached to the outer wall of convex ring 22 under the pressing of fastening sleeve 4, to ensure the sealing property.

[0022] In the embodiment, the outer edge of convex edge 52 is flush with the outer wall of step 21, so that convex edge 52 can be attached to the inner wall of fastening sleeve 4 to further improve the sealing property.

[0023] In the embodiment, the outer wall of positioning ring 11 is provided with anti-skid lines, to facilitate dismounting and mounting, and the outer wall of positioning ring 11 can also be polygonal in cross section and be dismounted and mounted by tools.

[0024] The above is only the preferred specific implementation mode of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model. Therefore, the protection scope of the utility model should be subject to the protection scope of the claims.

Claims

1. A mounting and positioning structure for an automotive brake guide pin, characterized in that, The utility model relates to a kind of pliers, including pliers body (1), support (2), guide pin (3), fastening sleeve (4) and dust cover (5), the pin hole (23) for the front end of guide pin (3) embedding is provided on the support (2), a circle of steps (21) is located on the outer side of pin hole (23) of support (2), the step (21) is equipped with a circle of convex ring (22), and outer thread is provided on the outer wall of step (21);The rear end of the guide pin (3) is equipped with a circle of clamping groove (41), and the dust cover (5) is sleeved on the guide pin (3), the inner wall of one end of the dust cover (5) is equipped with a circle of clamping block (51) matched with the clamping groove (41), so that the dust cover (5) one end is positioned by clamping block (51) embedding into the clamping groove (41) of guide pin (3), dust cover (5) other end is sleeved on convex ring (22), and the outer wall of dust cover (5) other end is outwardly convex and equipped with a circle of convex edge (52), the convex edge (52) is attached to upper step (21), the fastening sleeve (4) is connected by screw thread on step (21), and the end of fastening sleeve (4) is positioned and pressed against dust cover (5) convex edge (52);The screw hole (12) is set in the pliers body (1) at the position corresponding to pin hole (23), and the pliers body (1) is equipped with a circle of positioning ring (11) concentric with screw hole (12) on the side close to support (2), the bolt (6) is embedded in the screw hole (12), the bolt (6) is fixed by screw thread connection with the rear end of guide pin (3) and makes the rear end of guide pin (3) embedded into positioning ring (11), the inner wall of positioning ring (11) is attached to dust cover (5) outer wall and realizes the location of clamping block (51).

2. A brake guide pin mounting and positioning structure for a vehicle as set forth in claim 1, wherein, The top surface of the convex edge (52) is inclinedly provided as a conical surface, and the top end inner wall of the fastening sleeve (4) is also inclinedly provided as a conical surface and is matched with the top of the convex edge (52).

3. A brake guide pin mounting and positioning structure for a vehicle as set forth in claim 2, wherein The inner wall of one end of the dust cover (5) is attached to the outer wall of convex ring (22) under the pressing of the fastening sleeve (4).

4. A brake guide pin mounting and positioning structure for a vehicle as set forth in claim 2, wherein The outer side edge of the convex edge (52) is flush with the outer wall of the step (21).

5. A brake guide pin mounting and positioning structure for a vehicle as set forth in claim 1, wherein, The lower end of the positioning ring (11) is flush with the lower end of the clamping groove (41).

6. A brake guide pin mounting and positioning structure for a vehicle as set forth in claim 5, wherein, The outer wall of the positioning ring (11) is provided with anti-skid lines or the outer wall of the positioning ring (11) is in a polygonal structure.

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